I'm confused. Your partigyle ended at 1.030? or the IIPA did? Definitely not enough yeast if it is the IIPA. This is a big (read 'massive') beer and needs a ****load of yeast. A starter should at least be allowed to run itself overnight, I let them go about 2 days on the stirplate.
However, it's only been 4 days. Let it keep going and see what happens in a couple days. If you have another packet of yeast you could throw it in there. Doubt it would hurt anything. I would not rack it to another carboy during fermentation, but if there is no hydrometer movement in 2 days go ahead. If anything right now you could grab some of the London yeast and add it in there.
I then added a few lbs of pale and a few biscuit and sparged to get me second beer.
Did you re-mash or something? Adding grain to the finished mash and simply sparging over it will get you nothing extra except for starches. Pale and biscuit need a full mash for at least 20 minutes at mash temps to convert and extract the sugars. You parti might be a little hazy because of the unconverted starches you introduced.